Device for operating and locking elevator-doors.



W. J. STILLING.

DEVICE FOR OPERATING AND LOOKING ELEVATOR DOORS. APPLICATION FILED MAR.22. 191a.

Patented Dec. 16, 1913.

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COLUMBIA PLANOGRAPH co" wAs C.

W. J. STILLING.

DEVICE FOR OPERATING AND LOOKING ELEVATOR DOORS.

2 SHEETS-SHEET 2. W F T 1 1 T 1 73 APPLIOATION mm) 1m Patented Dec. 16, 1913.

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WILLIAM J'. STILLING, 0F ELMHURST, NEW YORK, ASSIGNOR TO I-IEGLA-WINSLOW COMPANY, INC., OF BROOKLYN, NEW YORK, A CORPORATION OF NEW YORK.

DEVICE FOR OPERATING AND LOCKING ELEVATOR-DOORS.

Specification of Letters Patent.

Patented Dec. 16, 1913.

Application filed March 22, 1913. Serial No. 756,124.

To all whom it may concern:

Be it known that I, W'ILLIAM J. S'ruanno, a citizen of the United States, and a resident of Elmhurst, in the county of Queens and State of New York, have invented certain new and useful Improvements in Devices for Operating and Locking Elevator- Doors, of which the following is a specification.

My invention relates to devices for operating sliding doors such as elevator doors and particularly relates to the construction of the handle by which the door is opened and closed and the means by which it is locked in closed position.

The main object of the invention is to simplify and cheapen the construction of such devices and to simplify the operation of opening, closing and locking elevator or Other sliding doors by providing automatic means cooperating with the handle whereby the door will automatically lock when closed and such that the door can be re leased and opened in any convenient position in which the operator may be standing behind it.

The invention is particularly applicable to sliding doors which are operated by means of a set of bars or levers pivoted to each other and to the door and may be applied to single or double speed doors.

The invention consists in the improved operating device for sliding doors herein after more particularly described and then specified in the claims.

In the accompanying drawings, Figure 1 is a rear elevation of a set of elevator doors having my invention applied thereto; in this view double speed doors being illustrated. Fig. 2 is an enlarged longitudinal section through the operating handle and locking device constructed in accordance with my invention. Fig.3 is a transverse section taken on the line 3--3 Fig. 2. Fig. 1 is a front elevation of the latch-piece secured to the door. Fig. 5 is a rear elevation of single speed doors having my invention applied thereto. Figs. 6 and 7 are detached elevations of the operating handle showing the latch-tube in locked and unlocked position.

In the drawings 1 indicates the door frame, while 2 indicates the individual door sections, in Fig. 1, three sections being shown which are adapted to slide one past the other to open or close the doorway. These door sections are connected together so that when the first one is caused to travel the intermediate door travels with it, the last section being, in this case, stationary. The door sections are connected together by bars or levers 3, 1 and 5. These levers are pivotally connected together and the lever or bar 3 is secured at the fixed pivot point 6 to the door frame 1. The lever 1 is pivoted as at 7 to the intermediate door and the end of the lever or bar 5 is pivoted as at 8 to the first door. The lever or bar 5 with its attendant parts, to be presently described, constitutes the operating handle for the doors.

9 indicates a sleeve preferably in the form of a tube which surrounds the lever or bar 5 for the greater part of its length. This tube fits loosely over the bar 5 so as to slide thereon and is suitably guided on the bar to keep it from turning. 10 indicates a spring mounted within the tube 9 and surrounding the bar 5 at one end thereof. This spring tends to normally maintain the tube at one end of the bar 5 and pressed against a suitable stop thereon as for instance the arm by which the bar is pivoted to the door at 8. At the opposite end the tube is provided with a rearwardly extending latch 11.

12 indicates a plate secured to the first door 2 and in a position substantially in line with the pivot points 6, 7 and 8. The plate 12 is provided preferably with two laterally projecting lugs 13 and 14, one above the other, with suflicicnt space between them to permit the entrance of the latch 11. The upper projection 13 is preferably provided with an inclined side 15 which is struck by the latch 11 in its downward travel and pulls the tube 9 along the bar 5 against the action of the spring 10. The lower projection 1 1 is provided as a stop to prevent any possible further depression of the bar 5 after the latch 11 is underneath the projection 13.

In the operation of the device, assuming that the doors are closed, the lovers 3, 4.- and 5 will be in the position indicated in dotted lines in Fig. 1, the point of pivotal connection between the levers 3 and 1 being preferably slightly off center. At this time the latch 11 is in the space between the projections 13 and 14:, as indicated in Fig. 2, and the doors are locked against any movement. Vhen it is desired to open the doors, the

operator takes hold of the tube 9 at any point throughout its length and draws it toward the left against the action of the spring 10. After drawing it toward the left, he can then raise the left end of the lever or bar 5, the parts taking the position shown in full lines in Fig. l and the doors can be drawn open, this action taking place by the same movement as is necessary to release the latch 11 from the latch-piece.

In closing the door, all that is necessary is to either push the door or to push on the tube9 and the bars 3, 4 and 5 will straighten, the left end of the bar 5 moving downward. In this downward movement the latch 11 strikes the inclined side 15 of the projection 13 and draws the tube 9 over against the action of the spring 10, until such time that the upper surface of the latch 11 has traveled beyond the lower surface of the projection 13, at which time the spring 10 slides the tube 9 along the bar 5 and draws the latch 11 underneath the projection 13. The doors are now locked against any opening movement and cannot be opened until the tube 9 is again pulled toward the left. It will thus be seen that the natural action of the operator in pulling on the tube 9, as if to open the door, draws the latch 11 to inoperative position, where a slight lifting action causes it to travel free of the pr0jec tion 13.

In Fig. 5 is illustrated an arrangement having but one movable door, the operation of the handle and locking means to both open and close the door being the same as in the form illustrated in Fig. 1.

It will be understood that various modifications and changes in the details of construction as illustrated may be resorted to without departing from the spirit of the invention as specified in the appended claims.

What I claim as my invention is:

1. In an operating device for sliding doors, the combination of a bar pivoted to the door means pivotally connecting the other end 0 said bar to a fixed pivot, a tube slidable on said bar, a lateral projection secured to the door and means carried by said tube and adapted to engage said projection to lock the door.

2. In an operating device for sliding doors, the combination of a bar pivoted to the door, means pivotally connecting the other end of said bar to a fixed pivot, a tube slidable on said bar, a lateral projection secured to the door, a latch carried by said tube and a spring adapted to cause said latch to engage the under side of said projection to lock the door.

3. In an operating device for sliding doors, the combination of a set oi": levers pivoted to each other and to the door at one end, the other end of the set being pivoted at a fixed point, a latch-piece secured to the door, a tube slidable on one of said levers and a latch carried by said tube and adapted to cooperate with said latch-piece to lock the door.

4. In an operating device for sliding doors, the combination of a bar pivoted at one end to the door, means pivotally connecting the other end of said bar to a fixed pivot, a tube slidable on said bar, a latch carried by said tube, a plate secured to the door and provided with a pair of spaced projections and a spring acting on said tube and adapted to draw said latch into the space between said projections to lock the door.

5. In an operating device for sliding doors, the combination of a bar pivoted to the door at one end, means connecting the other end of said bar with a fixed pivot, a tube slidable on said bar, a latch carried by said tube, a plate secured to the door and having a lateral projection provided with an inclined side and a spring adapted to draw said latch under said projection to lock the door.

Signed at Brooklyn, in the county of Kings and State of New York this 18th day of March APD. 1913.

IVILLIAM J. STILLING.

Witnesses W. A. OCoNNoR, A. E. BRUCH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

